Does Sugar affect Immune System ?

We learnt in the previous article Vitamins for the Immune System how important our immune sysyem is and how how important fueling it with the right Vitamins and Minerals is to ensure optimum immune system health and performance. In this article, we will look into Sugar, with a question in mind, does sugar affect our immune system ?

As if consuming too much sugar isn’t bad enough, did you know that high sugar intake reduces absorption of crucial vitamins and minerals? It’s true! (Trusted Source) interfering with nutrient absorption and causing nutrient depletion could be the root of every harmfull effect sugar has on the body, whether decreased immunity, weakened bones, or diabetes.

Vitamins and minerals negatively affected by a sweet tooth

VITAMIN C is a crucial Vitamin to support health immume system a deal with infections. Unlike most mammals, humans are unable to synthesize their own vitamin C so we must obtain it from outside sources. Researcher Dr. John Ely has demonstrated how high glucose levels inhibit vitamin C from entering our cells, decreasing absorption rates. Further research has shown that individuals who reduce their sugar intake experience significant improvement in vitamin C levels and its benefits.

It is important also to get ‘real’ Vitamin C intake from whole-food sources and not ascorbic acid, as most Vitamin C sold on the market is as unbeleivable as it may sound is not quite the real stuff. Is Ascorbic Acid Vitamin C ?


VITAMIN D is used by every receptor in the and affects 2000 genes in the body, is considered one of the most important Vitamins to support healthy immune system. A high intake of sugar, particularly fructose, increases the production of a devious enzyme which degrades stores of vitamin D. It can also undermine the production of another enzyme necessary to synthesize this critical nutrient. A shortage of Vitamin D can lead to a suppressed immune system and numerous health problems, including certain cancers. Since approximately 75% of people in Western countries are deficient in vitamin D, consuming excess sugar is a huge no-no.

CALCIUM – Everyone knows calcium is vital for strong bones among other health benefits. However, because calcium absorption is tied to vitamin D levels, sugar’s adverse effects on vitamin D will negatively impact calcium’s absorption as well. To make matters worse, excess sugar intake also increases calcium excretion.


MAGNESIUM – The high blood sugar and elevated insulin levels associated with excess sugar intake decrease magnesium absorption and cause the kidneys to excrete magnesium faster. Since magnesium is key in stabilizing blood sugar, a vicious cycle commences. As blood sugar regulation is impaired even more magnesium is excreted. Cutting the sugar helps ensure that magnesium, critical for a plethora of bodily functions, is absorbed and maintained.


CHROMIUM – Chromium, like magnesium, is involved in blood sugar regulation. Depletion of chromium contributes to decreased glucose tolerance, a precursor to diabetes. Like with magnesium and calcium, high sugar consumption promotes chromium excretion, putting you on a fast-track to deficiency. In fact, one study published in the journal Metabolism: Clinical and Experimental showed that consuming a diet consisting of 35% simple sugars increased natural excretion rates by 300%.



As Vitamin C and D are crucial for healthy immume system, having a high sugar intake can affect the absorbtion of these Vitamins, having a negative impact on the health and performance of your immune system.

The negative influence excess processed ssugar intake has on key vitamins and minerals adds to the significant body of evidence that too much processed sugar is detrimental to athletic performance and to overall health.

To prevent disease and stay healthy it’s imperative to both drastically decrease processed sugar consumption and replace with sugars from natural sources such as fruits and natural sources of carbohydrates.

Ensure that you’re receiving an adequate supply of the right Vitamins and minerals from the right sources to ensure a healthy and functioning immune system, Vitamins for the Immune System.